MAX767 Maxim, MAX767 Datasheet - Page 3

• Manufacturer Part Number: MAX767
• Description: 5V-to-3.3V / Synchronous / Step-Down Power-Supply Controller
• Manufacturer: Maxim

(Circuit of Figure 1 (5A configuration), V
__________________________________________Typical Operating Characteristics
100
100
90
80
70
60
50
90
80
70
60
50
0.001
0.001
EFFICIENCY vs. OUTPUT CURRENT
EFFICIENCY vs. OUTPUT CURRENT
I
LOAD
0.01
0.01
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
= 300mA
(1.5A CIRCUIT)
(7A CIRCUIT)
_______________________________________________________________________________________
0.1
0.1
IDLE-MODE WAVEFORMS
5µs/div
5V-to-3.3V, Synchronous, Step-Down
1
1
IN
10
10
= 5V, oscillator frequency = 300kHz, T
100
100
90
80
70
60
50
90
80
70
60
50
0.001
0.001
EFFICIENCY vs. OUTPUT CURRENT
EFFICIENCY vs. OUTPUT CURRENT
3.3V OUTPUT
50mV/div, AC COUPLED
LX
5V/div
0.01
0.01
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
(10A CIRCUIT)
(3A CIRCUIT)
Power-Supply Controller
0.1
0.1
I
1
1
LOAD
A
= 5A
= +25°C, unless otherwise noted.)
10
10
PWM-MODE WAVEFORMS
1000
0.01
100
100
0.1
10
90
80
70
60
50
1
1µs/div
0.001
0.001
EFFICIENCY vs. OUTPUT CURRENT
SYNC = REF (300kHz)
LOAD CURRENT (% FULL LOAD)
SWITCHING FREQUENCY vs.
0.01
PERCENT OF FULL LOAD
0.01
OUTPUT CURRENT (A)
(5A CIRCUIT)
0.1
0.1
1
3.3V OUTPUT
50mV/div, AC COUPLED
LX
5V/div
1
10
100
10
3